Arch for locomotive-furnaces.



U. B. MOORE. ARCH FOR LOCOMOTIVB FURNACES.

APPLICATION FILED JULY 1a, 1908.

1,069,974. Patented Aug. 12, 1913.-

3 SHEETS-SHEET1,

anon Won V c. MOORE. ARCH FOR Locomo'rrva FURNACES.

APPLICATION FILED JULY 13, 1 08f L%9,9?%. I Patented Aug. 12, 1913.

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m 55 may ccnccrri" Known that i, .CHARLEQE Hemmer a ciiizeiroi ihe United States, and

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which th' oliowir 'iso i'uii, clear, and act CiEZSCZl'fJclGZl, such as W111 eoobie others .1 :11 1 11 EMLUAEQ in me areio which iceppertems to kc and use the some.

My imeiiivion rcicies to iimprovcirients jin locomotive hoiier furnaces and. has "for its object the improvement of shc iom, construction end arrongemem of? refractory hrici: o ches for and in locomotive 'hoiier fire Tocgres the kind which are equipped Wire arch supporting tubes.

Eipecicl oiijects anti cdvontegesof my in- 'i'eniir,-n will appear hereinafter.

My iiivenaiori consists in the combination with a locomotiveiire box, equipped with erch sup rtiz g cubes, of. a arch composed oi refractory bricks resting 511 c cubes and approaching the sioie s or the fire box, arid iGCiZiEEbIiQkS Ol icirs excenciing between the eciges of the body respective side sheets of she a: inciting bricks serving 20 se- '7 rock or hold the orch ho egainsr. 1cm movement upon he 11g cubes.

y invention will be more reodiiy undero egg reference to the accompanying drawings .i orining part of thisrspeciiicatiozi, emi

which, Figure 1, is a vertical section of a. loco- .EZiVO fire cox oi the narrow type, con- 1 ring a. refractory front arch. embodying J iiii'ention, the section being on the line L of Fig. Fig. 52, is an irregular horizontei section on the line YY of Pi 1. Pi 3, is .1 Vertical section on the lines .Z-Z or Figs. 1 and. 2. F g. i, 15 a sectional detail, euhsinniizzliy on the line VV 0i 1s a pizui View or" the arch as 1. it appears in o. hm: of the Wide type. Fig. 8, is 21, perspective detaii of one of the iocl ing' blocks or bricks.

As shown in the drawings the Woiis of o. locomotive fire her; are constituted by the iiue sheet L; ihc sicie sheets 3, the rear Sheet i and the crown sheet i represents the he i" T, extend forward from the upper mic of -Hie flue sheet 2. The fire box is iosed by the hoiier sheii anti fornie therefigaecificeeiorl of Lowers Eatcni.

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with ihe usual "from, side and rear Water iegeS, 8 311618. The arch uhes 9 occupy inclined positions and extend irom the iower port of the-fine sheet 2, to the upper part of the rear sheet 4. The Water from the from; Water leg 8 iiows through aches i0 rho rear Wa ter leg 8 and. prevents the burning out of the tubes.

Fire boxes of different eypes cnoi sizes require arch iiubes of ciifi'erezoi forms and inclinations, also difierenic numbers thereof; but they are essentially the some, and perform the some functions in oil cases. Locomotive ire-boxes are oiiwo oriricipai types; the wide type and the narrow Fire boxes of the Wide type, as shown in Fig. '5', ere chorccicrizeoi by side sheets which are substontieliy vertical or which flare outwardly at the heteorn, the grate, generaily, being of praoticeiiy the some width as the top of the fire box. Nor-row fireboxes as shown in Figs. 1 to r, chorac't-erizec'i hyside sheets which curve or inwardly at the bottom, their grates. hciiig narrower.

Notwithstanding ifihe di-fiererii: Shapes, io evoiii confusion, I have eripiicii some reference numerals to correspoiuiing pare throughout the drawings of sooth he mirrow omi the Wide""iire-hoxes.

My invention as herein represented is readily odcptabie -to {11 types enoi' sizes of iocomotivciire boxes and overcomes hhe difficulties met with, and the objections hitherto urged against the use of, arch noises and refractory arches in locomotives, including such are common to all types as well as the objections and ,diihcuities-thet ore inciividuaily characteristic thereof.

The arch rests upon the arch robes and is composed of a number of refractory bricks; those nsuaiiy take their dimensions from the fuel door of the fire cox, ihrough which they musthe passed ii the removal or the grate is to be avoided. In fact iorger bricks are too heavy for convenient hcndiing end it is desirable that they he as email as here indicated.

"in carrying one iheinveniion I empioy as many arch tub s as may he reqnircri to suit the dimensions 0 the bricks and hire dimensions oi. ihe box. piecing the arch tribes in ihc fire box I space there co'correspomi with Hie transverse Width of ihe arch bricks and '1 leave, between the outermost till tubes and the side sheets, sulficient space to permit easy access to the side sheets and the stay bolts, which require frequent in spection and repair.

novel arch comprises a substantially rectangular body portion or arch proper made up ofa pluraiity of refractory bricks A, iittcd together as shown, and resting upon the arch tubes 9. The arch body may comprise one, two, three or more longitudinal rows of these bricks A, according to the dimensions of the fire box and the spacing of the arch tubes. The arches herein shown are so-callcd solid arches, being made up of solid or imperforate brick, but I desire that it shall be understood that my invention is also applicable in the construction of so called hollow arches particularly such a embody the principles of the Wade and Nicholson inventions.

As shown in the drawings, small refractory bricks or blocks B, are used at the lower end of the arch to hold the same away from the flue sheets 2. These bricks are provided with grooves or channels 6 in their undersides to lit the tubes 9, and they are provided with relatively inclined ends I) and Z) to engage the flue sheet and the lower bricks A of the arch, respectively. The arch presses upon the blocks B, and with the tubes 9 serves to effectively lock the blocks 13, againstdisplacement by the vibration of the locomotive. These blocks B are particu larly adapted for use with solid arches and .4 by use thereof two special advantages are secured, 2'; e. they obviate the necessity for shaping or forming the lower arch bricks to fit the bent ends of the arch tubes and the relatively angular :tluc sheet and also provide cinder discharge openings at the lower end of the arch adjacent to the flue sheet. For securing the arch body against lateral movement on the arch tubes, I cmploy a plurality of locking bricks or blocks D. These wedges and arrange them between the edges of the arch body ahd the side sheets of the box, in which position they constitute -tightening wedges, struts or blocks and securely locl; the arch bricks A, between the sides of the fire box and upon the arch tubes. shown in both Figs. 2 and 5, each side 'ing block'rests upon or engages the ends vwo of the body bricks A, and the locking blocks at one side of the arch are directly opposite those at the other side thereof. In wide or straight sided fire boxes (Fig. 5) and in the lower parts of narrow fire boxes, (Fig. 2) I find it possible to use locking blocks D, of uniform dimcnsions. If desired these blocks D may be, and they usually are, identical with the blocks B, one mold being used in making them. The blocks B, however, are inverted with respect to the blocks D.

, ploy wedge blocks or respond to the 1 form after the manner The upper part of a narrow tire box is wider than the lower part, and for securing the upper bricks of the arch body, I e.. struts Y, which are longer and preferably wider than the blocks B and D. As shown in the drawings, the ends of the body bricks A,inay be notched to receive and hold the locking blocks D, all though there is slight danger of the dis lodgincnt of the wedge blocks after they have been placed in position. The lower ends of the wedge blocks rest upon the edges of the arch body and their upper ends lean and wedge against the side sheets. The shorter blocks 1) usually occupy inclined positions as shown in Fig. 3. The ends of the blocks l), are relatively inclined as in the case 01 the blocks B, and the longer sides of the blocks l) are placed uppermost, so that the blocks constitute true wedges between the arch and the side sheets. To provide proper bearings for the lower or inner ends of the locking blocks, I prefer to bevel the edges a of the arch brick, as shown in the drawings, but if desired the beveled surfaces on the bricks may be restricted to corends of the locking blocks. The bricks A, are however, more readily in i'crchangeable when their ends are fully beveled as herein shown. The bases or inner ends of the locking blocks are preferably wider'than the outer ends thereot and said outer ends are formed to minimize the area of engagement between the locking bricks and the side sheets. In making the bricks D, prefer to provide them with ends d, that are pointed in order that they may be interchangeable. The manner in which the bricks l) engage the. side sheets is clearly shown in Fig. 3.

A special advantage of my novel arch lies in the fact that while its members serve to securely hold it between the side sheets of the fire box, the small locking blocks maybe readily knocked out when it is necessary to' repair the arch or the side sheets of the furnace. It is obvious also that the locking blocks secure the arch in place without covering the side sheets to such extent as to prevent the uniform heating and cooling thereof or inspection of the stay bolt. These locking blocks also possess the advantage of readily accommodating the arch to fire boxes of varying widths and to such as may have corrugated, warped or patched side sheets.

As various modifications of my invention will readily suggest themselves to one skilled in the art, I do not confine the invention to the specific shape, structure or' arrangement of bricks herein shown and de l scribed.

Having thus described my claim as new and desire to Patent 1. A locomotive boiler furnace, in combiinvention, it secure by Letters nation with a ioup of arch tubes of less width than sai furnace, a refracto arch spaced from the due sheet and comprising a body portion laterally co-extensive r1 ith said group of arch tubes and provided with upwardly and inwardly inclined beveled edges and edge projections, and refractory locking blocks acting as wedges between said body portion and the side sheets, having their outer ends engaged with respective side sheets and their inner ends formed to fit respective beveled edges of the arch body and held by the projections thereon, substantially as described.

2. locomotive boiler furnace containing a grouper" arch tubes, in combination with a refractory arch resting on said tubes and or less width than the furnace, wedge sha ed biocks upon said tubes between the no sheet of the furnace and the lower end of "the arch, and other, identical wedge blocks engaged with the sides of the furnace and- ,974 furnace arches, having relatively inclined ends and relatively inclined sides and in its long side provided with a longitudinal groove to fit an arch tube, said block being longitudinally tapered and of greatest area at its end which is adapted to be placed against the arch, substantially as described.

4. A locomotive boiler furnace containing a group of arch tubes, in combination with a refractory arch resting on said tubes and of less width than the furnace and a plurality of wedge bricks spacing the bottom of said arch from the flue sheets, and relatively inverted, identical wedge bricks wedging said arch between the sides of: the furnace, respectively, substantially as described.

In testimony whereof, I have hereunto set my hand, this 23rd day of June, 1908, in the presence of two subscribing witnesses.

CHARLES BREARLEY MOORE.

Witnesses:

LULU H. Menvnr, CHARLES Gunner HAWLEY, 

